Question

look at this graph:
what is the equation of the axis of symmetry?

Explanation:

Step1: Identify vertex x-coordinate

The axis of symmetry of a parabola is the vertical line through its vertex. From the graph, the vertex's x-coordinate is -3.

Step2: Write axis equation

The equation of a vertical line is $x = h$, where $h$ is the x-coordinate of the vertex.

Answer:

$x = -3$